--- old/src/hotspot/share/jfr/jfr.hpp	2020-01-28 21:42:19.927437200 +0900
+++ new/src/hotspot/share/jfr/jfr.hpp	2020-01-28 21:42:19.659670600 +0900
@@ -57,6 +57,7 @@
   static void exclude_thread(Thread* thread);
   static bool is_excluded(Thread* thread);
   static void include_thread(Thread* thread);
+  static void setup_emergency_dump_file_descriptor();
 };
 
 #endif // SHARE_JFR_JFR_HPP